| CustomerItemID | Is the identifier provided by the customer for the item. |
| EPCID | Allows an instance of an item to communicate the ElectronicProductCodeID that it was assigned. The ElectronicProductCodeID is one of the major RadioFrequency Identifiers used. |
 ItemID | Is the primary item Identifier associated with the given item within the scope of the given integration as provided by the Party or entity that has created this document instance. |
| ManufacturerItemID | Is the identifier provided by Manufacturer for the Item. One example may be the model number. |
| SupplierItemID | Is the identifier provided by the supplier for the item. |
| UPCID | Allows an instance of an item to have a UPC identifier associated. |